<script setup lang='ts'>
import { usePrimeVue } from 'primevue/config';
import { useToast } from 'primevue/usetoast';
import useFile from '@/composables/primevue/useFile'

const { files, totalSize, totalSizePercent} = useFile()

const $primevue = usePrimeVue();
const toast = useToast();

const onUpload = () => {
    toast.add({ severity: 'info', summary: 'Success', detail: 'File Uploaded', life: 3000 });
};

const onRemoveTemplatingFile = (file, removeFileCallback, index) => {
    removeFileCallback(index);
    totalSize.value -= parseInt(formatSize(file.size));
    totalSizePercent.value = totalSize.value / 10;
};

const onSelectedFiles = (event) => {
    files.value = event.files;
    files.value.forEach((file) => {
        totalSize.value += parseInt(formatSize(file.size));
    });
};

const uploadEvent = (callback) => {
    totalSizePercent.value = totalSize.value / 10;
    callback();
};

const onTemplatedUpload = () => {
    toast.add({ severity: "info", summary: "Success", detail: "File Uploaded", life: 3000 });
};

const formatSize = (bytes) => {
    const k = 1024;
    const dm = 3;
    const sizes = $primevue.config.locale.fileSizeTypes;

    if (bytes === 0) {
        return `0 ${sizes[0]}`;
    }

    const i = Math.floor(Math.log(bytes) / Math.log(k));
    const formattedSize = parseFloat((bytes / Math.pow(k, i)).toFixed(dm));

    return `${formattedSize} ${sizes[i]}`;
};

</script>

<template>
    <div class="grid">
        <div class="col-12">
            <div class="card">
                <h5>Advanced</h5>
                <FileUpload name="demo[]" @uploader="onUpload" :multiple="true" accept="image/*" :maxFileSize="1000000"
                    customUpload />

                <h5>Basic</h5>
                <FileUpload mode="basic" name="demo[]" accept="image/*" :maxFileSize="1000000" @uploader="onUpload"
                    customUpload />

                <h5>Template</h5>
                <FileUpload name="demo[]" url="/api/upload" @upload="onTemplatedUpload($event)" :multiple="true"
                    accept="image/*" :maxFileSize="1000000" @select="onSelectedFiles">
                    <template #header="{ chooseCallback, uploadCallback, clearCallback, files }">
                        <div class="flex flex-wrap justify-content-between align-items-center flex-1 gap-2">
                            <div class="flex gap-2">
                                <Button @click="chooseCallback()" icon="pi pi-images" rounded outlined></Button>
                                <Button @click="uploadEvent(uploadCallback)" icon="pi pi-cloud-upload" rounded outlined
                                    severity="success" :disabled="!files || files.length === 0"></Button>
                                <Button @click="clearCallback()" icon="pi pi-times" rounded outlined severity="danger"
                                    :disabled="!files || files.length === 0"></Button>
                            </div>
                            <ProgressBar :value="totalSizePercent" :showValue="false"
                                :class="['md:w-20rem h-1rem w-full md:ml-auto', { 'exceeded-progress-bar': totalSizePercent > 100 }]">
                                <span class="white-space-nowrap">{{ totalSize }}B / 1Mb</span></ProgressBar>
                        </div>
                    </template>
                    <template #content="{ files, uploadedFiles, removeUploadedFileCallback, removeFileCallback }">
                        <div v-if="files.length > 0">
                            <h5>Pending</h5>
                            <div class="flex flex-wrap p-0 sm:p-5 gap-5">
                                <div v-for="(file, index) of files" :key="file.name + file.type + file.size"
                                    class="card m-0 px-6 flex flex-column border-1 surface-border align-items-center gap-3">
                                    <div>
                                        <img role="presentation" :alt="file.name" :src="file.objectURL" width="100"
                                            height="50" />
                                    </div>
                                    <span class="font-semibold">{{ file.name }}</span>
                                    <div>{{ formatSize(file.size) }}</div>
                                    <Badge value="Pending" severity="warning" />
                                    <Button icon="pi pi-times"
                                        @click="onRemoveTemplatingFile(file, removeFileCallback, index)" outlined
                                        rounded severity="danger" />
                                </div>
                            </div>
                        </div>

                        <div v-if="uploadedFiles.length > 0">
                            <h5>Completed</h5>
                            <div class="flex flex-wrap p-0 sm:p-5 gap-5">
                                <div v-for="(file, index) of uploadedFiles" :key="file.name + file.type + file.size"
                                    class="card m-0 px-6 flex flex-column border-1 surface-border align-items-center gap-3">
                                    <div>
                                        <img role="presentation" :alt="file.name" :src="file.objectURL" width="100"
                                            height="50" />
                                    </div>
                                    <span class="font-semibold">{{ file.name }}</span>
                                    <div>{{ formatSize(file.size) }}</div>
                                    <Badge value="Completed" class="mt-3" severity="success" />
                                    <Button icon="pi pi-times" @click="removeUploadedFileCallback(index)" outlined
                                        rounded severity="danger" />
                                </div>
                            </div>
                        </div>
                    </template>
                    <template #empty>
                        <div class="flex align-items-center justify-content-center flex-column">
                            <i class="pi pi-cloud-upload border-2 border-circle p-5 text-8xl text-400 border-400" />
                            <p class="mt-4 mb-0">Drag and drop files to here to upload.</p>
                        </div>
                    </template>
                </FileUpload>
            </div>
        </div>
    </div>
</template>
